Hi All:
Two quick questions, thanks for any guidance...
I'd like to run nodes with around 2T of local disk set up as JBOD. So I
would have 4 separate file systems per machine, for example /hdfs_a, /hdfs_b,
/hdfs_c, /hdfs_d . Is it possible to configure things so that HDFS knows about
all 4 file systems? Since we're using HDFS replication I see no point in using
RAID-anything...to me that's the whole point of replication Comments?
Is it possible to set things up in Hadoop to run multiple masters? Is there
any point/benefit reason for so-doing? Can I run multiple namenodes to guard
against a single namenode going down or being wrecked?
If you can't run multiple namenodes, then that sort of implies the machine
which is hosting *the* namenode needs to do all the traditional things to
protect against data loss/corruption, including frequent backups, RAID
mirroring, etc.
Thanks,
C G
---------------------------------
Looking for a deal? Find great prices on flights and hotels with Yahoo!
FareChase.
